GeForce RTX 3080 12 GB vs Radeon R9 M275X

Intro

Compare that to the Radeon R9 M275X, which comes with a clock frequency of 900 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 300 Watts (600%)

Memory Bandwidth

The GeForce RTX 3080 12 GB, in theory, should be a lot faster than the Radeon R9 M275X overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 862298 (1198%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (about 880%) faster with regards to AF than the Radeon R9 M275X. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 316800 (880%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 3080 12 GB is superior to the Radeon R9 M275X, and very much so. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 126720 (880%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.